It seems like it should be a natural fit to add in TV DVR functionality to a standalone security DVR system. If these products exist then my apologies and if anyone knows of any products that can do dual duty as a trouble free, security DVR and free TV DVR, please post the links? Thanks.

Also, as of 2013, what are some of the best and free or low cost standalone DVR solutions?

CCTV recorders are a completely different animal.
First off, most only have NTSC composite inputs. 2nd, the newer ones are IP capable. None have TV tuners built it, that is not their purpose. Besides, that last thing company would want is an employee watching a TV program instead of the cameras themselves.

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Abundant OTA television is what makes this country different from all others. Lets keep it this way. If you like Wi-Fi so much, OTA fits right in. After all, it is wireless.